BA 285 then AV 2354 at San Francisco
London → San Francisco → Denver
Timetable, San Francisco time
14:55BA 285 from London at the gatealso IB 3626, AS 5279, AY 5525, AA 6996, EI 8985
05:00AV 2354 to Denver leaves the gate
14 h 05 apart on the timetable, overnight
AV 2354 leaves 14 h 05 after BA 285 arrives on the timetable: more than half a day, so not a connection we count.